What is maximum time between coats

I believe that there is no precise maximum time limit so far as the second coat bonding on the first, but, in my experience roofs and especially flat roofs get dirty quickly so the second coat's adherence will be limited by the dirt and debris that quickly accumulates. Additionally, the reason for two moderately thin coats rather than one thick coat is partly so that the second coat will fill any "holidays" (empty spots) left over from the first. If the second coat is more than 1 week max after the first then I would recommend thoroughly cleaning the roof and essentially starting over.

I ordered four 5 gal buckets in white can I order 4 in a different color to make second coat easier to see?

Yup! All colors are compatible with each other. GREEN: https://www.amazon.com/dp/B008DVR9GG. RUSTIC: https://www.amazon.com/dp/B00FL5XI7Q. RED: https://www.amazon.com/dp/B00FL5ZYPU. MEDIUM BLUE: https://www.amazon.com/dp/B00FL5Y9ZQ. GRAY: https://www.amazon.com/dp/B00FL5KHFM.

Will this work to seal a deck like it is to seal a roof?

No I believe it is meant for roofs only

Does this require a top coat or can the 2 coats be sufficient?

For best performance, proper millage, and manufacturer warranty, two coats of Gaco Roof is required, not a separate or different topcoat. Each coat should not exceed 100 square feet per gallon. Many substrates, such as modified, will yield less coverage due to its porosity. We've seen as low as 75sq.ft. per gallon.

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GacoRoof GR1600 100% Silicone Roof Coating

Product ID: 5979044

Details

Brand
HENG’S
Exterior Finish
Painted Metal
Lock Type
Key
Manufacturer
Gaco
Material
100% Silicone

🎯1 gallon covers 100 sq. ft. for efficient application

🖌️Easy roller application with 3/4" nap roller

🛡️100% Silicone for ultimate leak protection

4113.90 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Seal it once, seal it right – your roof’s new best friend!

PERFECT BASE COAT - Ideal primer before finishing with Mobile Top Coating for a flawless, professional finish.
EFFORTLESS COVERAGE - One gallon covers up to 100 sq. ft., making your roof restoration project quick and cost-effective.
PRO GRADE APPLICATION - Designed for smooth, easy application with a 3/4" nap roller—no special tools required.
SEAMLESS LEAK DEFENSE - Creates a permanent, watertight membrane to protect your RV roof from leaks and damage.
DURABLE SILICONE FORMULA - 100% silicone base ensures long-lasting flexibility and weather resistance, keeping your roof like new.

GacoRoof GR1600 is a premium 100% silicone base roof coating designed to create a seamless, durable membrane that permanently seals and protects RV roofs from leaks. With easy roller application and coverage of 100 sq. ft. per gallon, it provides a professional-grade base coat that enhances roof longevity and prepares surfaces for a flawless finish.

Specifications

ASIN	B000VYNWWI
Automotive Fit Type	Universal Fit
Best Sellers Rank	#894,675 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #536 in Roof Flashings
Brand	HENG’S INDUSTRIES
Brand Name	HENG’S INDUSTRIES
Customer Reviews	4.2 out of 5 stars 47 Reviews
Exterior Finish	Painted Metal (Off-White)
Included Components	Heng's HGR1600-5 Gaco Silicone Bass Coat Off-Wht
Item Type Name	Heng's HGR1600-5 Gaco Silicone Bass Coat Off-Wht
Item Weight	52 pounds
Lock Type	Key
Manufacturer	Gaco
Manufacturer Part Number	HGR1600-5
Material	Silcone
Material Type	Silcone
Model Number	HGR1600-5
Number of Items	1
OEM Equivalent Part Number	HGR1600-5
UPC	685055669282
Unit Count	1 Count

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